Model Questions for SSC Junior Engineer EXAM - Electrical Engg set-2

1. The positive plates of nickel iron cell is made up of

(a) Ferrous hydroxide
(b) Nickel hydroxide
(c) Lead peroxide
(d) Potassium hydroxide

2. In lead acid accumulators, the container is filled with distilled water and concentrated sulphuric acid in the ratio of

(a) 1 : 2
(b) 1 : 3
(c) 2 : 1
(d) 3 : 1

3. Electric heaters is made up of

(a) Steel
(b) Chromed iron
(c) Brass
(d) Both (a) and (b)

4. Buzzer in principle is a bell

(a) with hammer
(b) with both hammer and gong
(c) without hammer and gong
(d) with gong

5. In leclanche cell, anode is packed in a porous pot containing

(a) sulphur dioxide
(b) manganese dioxide
(c) charcoal powder
(d) only (a) and (b)

Study Kit for SSC Junior Engineer EXAM (Paper-1) 2017-2018

6. In telegraphic machine, the machine parts that sends the message and the machine parts that receives the message are

(a) Morse sounder, Morse key
(b) Morse key, Morse key
(c) Morse key, Morse sounder
(d) Morse sounder, Morse sounder

7. The handle of iron box is made up of

(a) Ebonite
(b) Chromium
(c) Bakelite
(d) Only (a) and (b)

8. Heating element of electric iron box is an alloy of

(a) Iron and magnesium
(b) Nickel and chromium
(c) Copper and nickel
(d) Nickel and cobalt

9. The emf of the dry cell is about

(a) 0 V
(b) 0.5 V
(c) 1 V
(d) 1.5 V

10. Lithium cells operates ranging from

(a) -25 ° C to 25 ° C
(b) -50 ° C to 25 ° C
(c) -50 ° C to 75 ° C
(d) -75 ° C to 75 ° C

Study Kit for SSC Junior Engineer EXAM (Paper-1) 2017-2018

Answer

1. (b) 2. (d) 3. (d) 4. (c) 5. (d) 6. (c) 7. (d) 8. (b) 9. (d) 10. (c)